<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<div id="box">
			555
		</div>
	</body>
</html>
<script src="http://code.jquery.com/jquery-3.3.1.min.js" type="text/javascript" charset="utf-8"></script>
<!-- <script src="js/jQuery.js" type="text/javascript" charset="utf-8"></script> -->
<script type="text/javascript">
	console.log($("#box").html());
</script>